Rather than take the car to the dealer and lose it for a day, I simply checked the right rear brake fitting myself. The FSM says 40 ft-lbs, and according to my torque wrench my bolt was tight. No signs of leakage, no loss of fluid in 5000 miles - guess I'm okay.
_________________________
2004 GS GTP/WS6
3.4" puley, BIG conical K&N filter
14.22@96.5 mph